Anthony beckenzaun



(No Model.)

Patented Mar. 17, 1885.

INVENTOR t Jlnthonyfieckmzaum 6/ WITNEgES P ll ATTORNEY.

UNITED STATES PATENT OFFICE.

' ANTHONY REGKENZAUN, OF LONDON, ENGLAND, ASSIGNOR TO FREDERICK RROKRNZAUN, or New YORK, N. Y.

DYNAMO-ELECTRIC MACHINE AND ELECTRIC MOTOR.

SPECIFICATION forming part of Letters Patent No. 318,884, dated March 17, 1885.

(No model.)

To all whom, it may concern.-

Beit known that I, ANTHONY REOKENZAUN, a subject of the Queen of Great Britain, residing in London, England, have invented a new 5 and useful Improvement in Dynamo and Magneto Electric Machines and Electric Motors; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying d raw- IO ings, forming a part of this specification.

My invention relates to the class'of electrical generators and motors in which the form of armature known as the ring-armature is used and it consists, first, in a magnetic core or ring I 5 for such armatures, formed of series of links joined to each other by rods or pins passing through eyes near the ends of thelinks, forming a structure similar to an endless pitch-chain.

It further consists of a field-magnet located within the armaturering, supported by the armature-shaft and maintained in position by a weight attached to or formed integral with the internal field-magnet.

In electrical machines of this class it is usual to employ for the cores of the armature masses of iron in the form of drums, cylinders, or rings, or of a number of disks or plates, or of wire wound around a hub. Such cores are neces sarily heavy, and when revolved in a magnetic field currents are produced within them, generating heat and reducing the efficiency of the machine.

My invention is designed to obviate these defects and to furnish a core of lighter weight with increased efficiency, and at the same time to facilitate winding the armature.

Figure 1 in the drawings is a longitudinal section of the armature and fieldmagneataken on line 00 a" in Fig. 2. Fig. 2 is a vertical transverse section taken on line y'y in Fig. 1.

Like letters of reference refer to the same parts in the two figures of the drawings.

The armature-core is composed of series of links A of magnetic material supported by spiders or heads B, fixed to the shaft 0. The links A are oblong in form, with an angular projection, a, at each end 011 the outer side. These angular projections serve two purposes: First, to serve to fill up with iron a space which otherwise would be void. The iron is a part of the armature, which is a magnet, and therefore these projections serve to make the distance between the external field-magnet,N and S, a minimum. It is well known that in electric motors the field-magnets and the armature 5 5 act as electro-magnets,which when excited by an electric current sent through the machine from an external source attract or repel each other. The armature, being thus attracted at the magnetized parts of its circumference by the external magnet-poles, and being mounted upon a rotating shaft, will consequently turn or tend to turn around its axis, and thereby convert electrical energy into mechanical energy. This mutual attraction or pull, as it is called, is strongest at those parts of the armature-core which lie nearest to the poles of the external magnet. Therefore, instead of covering the whole surface of the armature with wire, I leave spaces between the bobbins at suitable intervals, into which I place the angular projections of the core-links. These projections I make angular or pointed, for the reason that the magnetic lines of force are more intense at sharp corners or points than on flat surfaces, and consequently the pull exerted upon the armaturecore greater than would be the case without this angular projection. Second, the said projections serve also to assist to hold on the armature-coils. Each link is apertnred near opposite ends to receive the rods D, by means of which the adjacent series of links are connected together and supported in proper relation to the armature-shaft C and poles N S of the field-magnet. 8 5 The links A of one series alternate with those of the adjacent series, so that when the several series are connected together by means of the rods D, and clamped together by nuts I) on the screw-threaded ends of the rods, the lateral faces of the ends of the links of one series touch the corresponding faces of the links of another series. The ends of the rods D are received in holes in the armatureheads B and secured by nuts 0. The rods D may be Of metal or of in- 9 5 sulating material, or they may be made ofmetal and provided with an insulating-covering.

To facilitate the construction of my armature, I wind each series of links A transversely with the conductor E before coiling the chain [00 of links into. a ring. I then form the ring and insert the last rod D to complete the connection and render the ring entire. The terminals of the several coils are connected up according to any'of the usual well known IO 5 methods.

To strengthen the magnetic field of the arthe internal and external field-magnets may mature above described, and in other armaconsist of permanent magnets. tures of the ring class, I place wholly within The internal field-magnet may have two or 70 the said armature an internal field-magnet, F, more poles, as may be required, and its form Composed of segments G G, of a hollow cylinmaybe varied to adapt it to different require der of magnetic material, connecting-plates H, ments. of magnetic material,joined to the inner sur- The form of the links of which the armaface of the segments G G, and heads I, of nonture-core is composed is not arbitrary, and 75 magnetic material. The heads I are fitted to may be varied within certain limits without the armatureshaft 0, so that the latter may rechanging the results.

Volve therein. The segments G G are concen- The armature-core is applicable to the holtric with the armature-shaft, and the plates H low armature of any dynamo or magneto elecare parallel with the said shaft. one machine or electric motor, and in dyna- 80 To the inner surface of the lower segment, mo and electric motors the power of the field I5 G, is secured a weight, J, for retaining the inmay be regulated by varying the current passternalfieldmagnet in avertical position while ing through the coils of the internal field- 'the machine is stationary, or in an inclined magnet or by cutting it off altogether. position while the machine is running, and The pole-pieces of the internal magnet may 85 upon studs (Z, projecting from the inner surbe of the same polarity as the armature, or

face of the heads I, are journaled the rollers they may be of opposite polarity. In one case 0, which rest upon the armature-shaft O and the internal magnet will attract and in the bear the weight of the field-magnet. This inother it will repel the armature. ternal or supplementary field-magnet may it- Having thus described my invention,wl1at I 0 self be constructed of a series of thin strips claim as new, and desire to secure by Letters linked or bound together by non-magnetic Patent, is

material, like or similar to the structure of the 1. An armature-core composed of a number armature-core itself, and it may be provided of series of links provided with angnlarprowith suitable bearings, when the rollers may jections and connected by pivoted joints, as 95 be omitted. Oil is introduced to the journals herein specified.

of the rollers 6 through inclined tubes 6, ex- 2. An armatureeore composed of apcrturcd tending outward from thejournals. The plates links A,having angular end projections, a, an d L are wound in opposite directions with the rods D, passing through the apertures of the conductor f, so that the two segments G G said links, as specified. 100 will be of opposite polarity, but similar to the 3. In a dynamo-electric machine or electric adjacent fieldmagnet poles. The internal motor, a field-magnet located wholly within field-magnet, F, is prevented from end movethe armature-core concentric with the armament on the shaft 0 by two sleeves, g-g, placed ture-shaft G, and balanced or supported upon on the said shaft between the armature-heads the shaft by rollers or wheels c, adapted to ro- 105 B and the internal field-magnet heads, I. The tate around axles ((7, fixed to said internal fieldsleeve 5/, which is of insulating material, is magnet and above the armature-shaft, and by secured to the shaft 0, and carries two metalweights J, resting upon or fixed to the interlic rings, h h, which are in electrical connecnal field-magnet at a point below the armation with the commutator-brushes of the mature-shai't, substantially as and for the purno chine through the wires 2', one ring receiving pose specified.

the positive current, the other the negative 4. The combination, with afield magnct locurrent. The rings h h are touched by concated wholly within the armature and sustact springs or brushesjj, connected with the pended from the armature-shaft, of a weight terminals of the coils of the internal fieldfor maintaining the saidinternalfieldmagnet II5 magnet, F. As the armature revolves in the in a vertical position, as specified.

5o intensified field between the poles of the in- 5. The combination, with the internal fieldternal field-magnet and the poles of the extermagnet, F, of two friction-rollers or wheels, 0, nal field-magnet, the efficiency of themachine carried by the magnet-heads, bearing on the is largely increased, as the internal portion of armatureshaft, and located entirely above the 120 the conductor of the armature is rendered said shaft, and of the counterbalancingweight highly effcctivein producingthe current. The J, located upon the said internal field-magnet said external field-magnet is represented, as to and below the said armatureshaft, substanits poles, in the drawings by N and S, and is tially as set forth in the annexed specification. represented only in outline, as it may be of any form of electr0-magnet desirable without ANTHONY RECKENZAUN.

6o afiecting the nature of the invention. The

weight in the internal field-magnet causes it Witnesses:

to maintain a nearly vertical position while \V. L. BYNE, the armature revolves around it. The con- Clerk to Ili'essrs. Sun, Gribble d; Bunion, 12 albtact-springs j j" remain stationary with the church Lane, London, Public Notaries. internal field-magnet, while the rings h h re- S. G. \VARNER,

volve in contact with them. Solicitor, 6 Quality Court, Chancery Lane, Lon- In magneto-electric machines and in motors don. 

